Type-writer



(No Model.)

- W. T. ROBERTSON.

TYPE WRITER.

No. 605,516. Patented June 14, 1898.

- mm ron Maw W A TTUHNEYS.

WILLIAM T. ROBERTSON, OF VVASIIINGTON, DISTRICT OF COLUMBIA, ASSIGNQR'TO JOHN T. UNDERWOOD, OF BROOKLYN, NEWV YORK.

TYPE-WRITER.

SPECIFICATION forming part of Letters Patent 0. 605,516, dated June 14, 1898. Application filed January 16, 1896. Serial No. 575,695. (No model.)

To all whom it may concern:

Be it known that I, WVILLIAM T. ROBERT SON, a resident of Washington, District of Columbia, have invented certain new and useful Improvements in Type-WVriters, of which the following is a specification.

My invention relates to type-writers, and- Most of the mechanism of the type-Writer which I have shown is of a well-knoWn con struction. I will therefore proceed to describe this construction generally.

This type-writer is provided with the usual base A, standards B, and top plate O, as well as with the usual carriage D, carrying the impression-roller E, whichis shiftable back and forth independently of the movement of the carriage D by the shifter-bar F. The typewriter is also provided with the usual keys G and printing agents H. (Shown in dotted lines in Fig. 2 as brought up to the impression or printing point beneath the impressionroller.) lnsteachhowever, of having the'roller usually in such machines I provide double or partition rollers II, which consist of the central boss H, on which the annulus orcentral partition II 'is mounted, the annulae H H servingfor the end partitions. These rollers are splined upon shafts J J, so as to have a free longitudinal movement thereon. These shafts J J are rotated in the usual manner. The longitudinal movement is imparted to the rollers by means of a frame K, secured to a sliding bar L, which is operated by a pivoted lever M, actuated by the key N. 011' one side of the central division of the roller, preferablyon the side nearest the operator, I secure in the ordinary manner a black inkin g-ribbon O, and on the other side is secured a diiferentlyrcolored inking-ribbon I, which may be of any color or form a suitable c011- trastIto the black inking-ribbon.

v The black ribbon, as shown in Figs. 1 and 2, is in such a position that when the machine I is being operated on the writing will appear in black. If. the operator has a word or phrase to which he Wants attention called it is merely necessary with my attachment to shift the ink-ribbons forward by means of the shifting-levers, which will place the differentcolored (or emphasizing) ribbon in the position occupied by the black ribbon before shifting. After the part to be emphasized is written the ribbon is returned to its original position by means of the shifting-levers and the writing proceeded with.

It is obvious that the device forming the subject-matter of my invention will be a great advantage in the preparation of letters, arguments, and the like by type-writing, as

the mechanism may be readily operated to more plainly distinguish the emphasized p'art from the other. It will likewise be observed that by my invention a copying-ribbon and I 'will of the operator. I f WVhat I claim, and desire to secure by Letters Patent, is-

- 1. In a type-Writer, a pair of multiplex coiling-rollers B, having a division between the compartments and constructed and adapted to receive ribbons or inkers coiled upon them in different compartments separated by ,said'division, whereby the coiled parts of the ribbon are kept separate and the exposed part guided, substantially as described.

2. The combination in a type-Writer, of a pair of multiplex coiling-rollers constructed to receive and hold ribbons or inkers coiled upon them in separate compartments, in com bination with the lever and intermediate connection, substantially as describedbetween said lever and the rollers to give the same endwise motion, as and for the purpose set forth.

"WILLIAM T. ROBERTSON.

Witnesses:

HOWARD A. RHINE, WARRENG. FITZHUGH. 

